From: Fred Baker <fred@cisco.com>
To: Justin McCann <jneilm@gmail.com>
Cc: bloat <bloat-devel@lists.bufferbloat.net>
Subject: Re: Getting current interface queue sizes
Date: Sun, 6 Mar 2011 23:21:06 -0800 [thread overview]
Message-ID: <24D67DE4-5637-4FFE-A375-23CF52A6BBAF@cisco.com> (raw)
In-Reply-To: <AANLkTimmJ1LZfee81Sww3426gpNU2jVPZ6U+TwjQMRWo@mail.gmail.com>
On Mar 6, 2011, at 2:31 PM, Justin McCann wrote:
> Thanks for your response. This is more research-related, trying to detect what parts of the stack on an end host are exhibiting and/or causing network stalls a few RTTs or more in duration. I'm also watching the number of bytes and packets sent/received, and when activity stops altogether, looking at the queue sizes shows where things are getting held up. I don't think the approach would be as useful for a middlebox that is just doing best-effort forwarding, but it would probably work if the box was acting as a TCP proxy. So, it's not bufferbloat-related per se, but I figure having the information doesn't hurt, as long as it's not misused like you mention.
No doubt. But I think you'll find that Cisco equipment tells you the maximum queue depth, not the current queue depth, or doesn't implement the object.
next prev parent reply other threads:[~2011-03-07 17:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-28 22:26 Justin McCann
2011-03-01 0:29 ` Fred Baker
2011-03-06 22:31 ` Justin McCann
2011-03-07 7:21 ` Fred Baker [this message]
2011-03-07 18:28 ` Jim Gettys
2011-03-07 21:18 ` Justin McCann
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